高疏水氟化SiO_2/聚醚砜复合膜的制备与表征
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摘要
以正硅酸乙酯(TEOS)和全氟癸基三乙氧基硅烷(PFDTES)为混合Si源,以聚醚砜(PES)为基膜材料,通过真空过滤和热处理工艺制备单侧高疏水氟化SiO_2/PES(fSiO_2/PES)复合膜。通过ATR-FTIR、XPS、TEM和FESEM等对单侧高疏水fSiO_2/PES复合膜进行表征,考察PFDTES修饰量和热处理条件对膜疏水性能的影响,并评价fSiO_2/PES复合膜的疏水稳定性能。结果表明,当PFDTES∶TEOS的质量比为3时,高疏水fSiO_2/PES复合膜的疏水性能较好(接触角为131.5°);当热处理温度为100℃,热处理时间为4h时,高疏水fSiO_2/PES复合膜表面的接触角为138.9°,且其对不同pH值的溶液都有良好的疏水性能。
A single-side highhydrophobic fluorinated silica/poly(ether sulfone)(fSiO2/PES)composite membrane was prepared by vacuum-filtrating with tetraethoxysilian(TEOS)and perfluorodecyltriethoxysilane(PFDTES)as the silica source.The chemical component and morphology of the single-side highhydrophobic fSiO2/PES composite membrane was examined by ATR-FTIR,XPS,TEM and FESEM,individually.The effects of PFDTES modification amount and the heat treatment condition on membrane hydrophobicity were investigated,and the hydrophobic stability of fSiO2/PES composite membrane was evaluated.The results show that the water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 131.5°when the mass ratio of PFDTES∶TEOS is 3.The water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 138.9°,as the heat treatment temperature is 100℃ and the heat treatment time is 4 h.In addition,the single-side highhydrophobic fSiO2/PES composite membrane exhibits excellent hydrophobic stable performance.
A single-side highhydrophobic fluorinated silica/poly(ether sulfone)(fSiO2/PES)composite membrane was prepared by vacuum-filtrating with tetraethoxysilian(TEOS)and perfluorodecyltriethoxysilane(PFDTES)as the silica source.The chemical component and morphology of the single-side highhydrophobic fSiO2/PES composite membrane was examined by ATR-FTIR,XPS,TEM and FESEM,individually.The effects of PFDTES modification amount and the heat treatment condition on membrane hydrophobicity were investigated,and the hydrophobic stability of fSiO2/PES composite membrane was evaluated.The results show that the water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 131.5°when the mass ratio of PFDTES∶TEOS is 3.The water contact angle of the single-side highhydrophobic fSiO2/PES composite membrane is 138.9°,as the heat treatment temperature is 100℃ and the heat treatment time is 4 h.In addition,the single-side highhydrophobic fSiO2/PES composite membrane exhibits excellent hydrophobic stable performance.
引文
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[18]GHAEE A,SHARIATY-NIASSAR M,BARZIN J,et al.Chitosan/polyethersulfone composite nanofiltration membrane for industrial wastewater treatment[J].Journal of Nanoscience and Nanotechnology,2013,9(4):213-220.
[19]BELFER S,FAINCHTAIN R,PURINSON Y,et al.Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified,modified and protein fouled[J].Journal of Membrane Science,2000,172(1-2):113-124.
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[22]XU W T,ZHAO Z P,LIU M,et al.Morphological and hydrophobic modifications of PVDF flat membrane with silane coupling agent grafting via plasma flow for VMD of ethanolwater mixture[J].Journal of Membrane Science,2015,491:110-120.
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[2]李颖娜,张玉忠,陈颖.气-液膜接触器用膜材料的研究进展[J].高分子材料科学与工程,2014,30(8):178-184.LI Y N,ZHANG Y Z,CHEN Y.The progress of membranes in gas-liquid membrane contactors[J].Polymer Materials Science&Engineering,2014,30(8):178-184(in Chinese).
[3]ZHANG Y,WANG R.Novel method for incorporating hydrophobic silica nanoparticles on polyetherimide hollow fiber membranes for CO2absorption in a gas-liquid membrane contactor[J].Journal of Membrane Science,2014,452:379-389.
[4]GHASEMA N,AL-MARZOUQIA M,ZHU L P.Preparation and properties of polyethersulfone hollow fiber membranes with oxylene as an additive used in membrane contactors for CO2absorption[J].Separation and Purification Technology,2012,92:1-10.
[5]ZHANG H Y,WANG R,LIANG D T,et al.Theoretical and experimental studies of membrane wetting in the membrane gas-liquid contacting process for CO2absorption[J].Journal of Membrane Science,2008,308(1-2):162-170.
[6]包晓慧,明平美,毕向阳,等.SiC/Al复合材料超疏水表面的制备[J].复合材料学报,2017,34(1):129-134.BAO X H,MING P M,BI X Y,et al.Preparation of superhydrophobic surface based on SiC/Al composite[J].Acta Materiae Compositae Sinica,2017,45(1):38-42(in Chinese).
[7]JOHNSON E E,MOHAMMADALI B,DIPAK R,et al.Effects of superhydrophobic SiO2 nanoparticles on the performance of PVDF flat sheet membranes for vacuum membrane distillation[J].Desalination,2015,373:47-57.
[8]ZHANG Y,WANG R,ZHANG L Z,et al.Novel singlestep hydrophobic modification of polymeric hollow fiber membranes containing imide groups:Its potential for membrane contactor application[J].Separation and Purification Technology,2012,101(11):76-84.
[9]LI S G,ROCHA D J,ZHOU S J.Post-combustion CO2capture using super-hydrophobic,polyether ether ketone,hollow fiber membrane contactors[J].Journal of Membrane Science,2013,430:79-86.
[10]RAZMJOU A,ARIFIN E,DONG G X.Superhydrophobic modification of TiO2nanocomposite PVDF membranes for applications in membrane distillation[J].Journal of Membrane Science,2012,415-416(1):850-863.
[11]ZHANG J,SONG Z Y,LI B A.Fabrication and characterization of superhydrophobic poly(vinylidene fluoride)membrane for direct contact membrane distillation[J].Desalination,2013,324:1-9.
[12]朱瑾瑜,沈逸,吴龙,等.有机/无机复合介孔膜的合成及其生物酶吸附行为研究[J].化学学报,2010,68(21):2231-2237.ZHU J Y,SHEN Y,WU L,et al.Studies on the synthesis of organic/inorganic hybrid mesoporous silica membrane and its adsorption behavior of enzyme[J].Acta Chimica Sinica,2010,68(21):2231-2237(in Chinese).
[13]CHOIA J S,LEE H S,GOAKA J C,et al.Field emission characteristics of carbon nanotube films fabricated on a metal mesh by filtration[J].Journal of Alloys and Compounds,2012,521(4):126-133.
[14]宋霖,韦奇,郝润秋,等.十七氟癸基修饰的有机-无机杂化二氧化硅膜材料制备及气体分离研究[J].高等学校化学学报,2012,33(8):1670-1675.SONG L,WEI Q,HAO R Q,et al.Preparation and gas separation property of organic-inorganic hybrid silica membranes modified by perflouorodecyl group[J].Chemical Journal of Chinese Universities,2012,33(8):1670-1675(in Chinese).
[15]ZHANG Y,WANG R.Fabrication of novel polyetherimidefluorinated silica organic-inorganic composite hollow fiber membranes intended for membrane contactor application[J].Journal of Membrane Science,2013,443:170-180.
[16]JOHNSON E E,MOHAMMADALI B,DIPAK R,et al.Effects of superhydrophobic SiO2 nanoparticles on the performance of PVDF flat sheet membranes for vacuum membrane distillation[J].Desalination,2015,373:47-57.
[17]SONG L,WEI Q,HAO R Q,et al.Preparation and gas separation of organic-inorganic hybrid silica membranes modified by perfluorodecyl group[J].Chemical Journal of Chinese Universities,2012,33(8):1670-1675.
[18]GHAEE A,SHARIATY-NIASSAR M,BARZIN J,et al.Chitosan/polyethersulfone composite nanofiltration membrane for industrial wastewater treatment[J].Journal of Nanoscience and Nanotechnology,2013,9(4):213-220.
[19]BELFER S,FAINCHTAIN R,PURINSON Y,et al.Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified,modified and protein fouled[J].Journal of Membrane Science,2000,172(1-2):113-124.
[20]LI Y N,LI H,YE H,et al.Preparation and characterization of poly(ether sulfone)/fluorinated silica organic-inorganic composite membrane for sulfur dioxide desulfurization[J].High Performance Polymers,2018,46:1-14.
[21]FARHADI S,FARZANEH M,KULINICH S A.Anti-icing performance of superhydrophobic surfaces[J].Applied Surface Science,2011,257:6264-6269.
[22]XU W T,ZHAO Z P,LIU M,et al.Morphological and hydrophobic modifications of PVDF flat membrane with silane coupling agent grafting via plasma flow for VMD of ethanolwater mixture[J].Journal of Membrane Science,2015,491:110-120.
[23]HSIEEH T,WU F L,CHEN W Y.Superhydrophobicity and superoleophobicity from hierarchical silica sphere stacking layers[J].Materials Chemistry and Physics,2010,121:14-21.
[24]RASTEGARPANAH A,MORTAHEB H R.Surface treatment of polyethersulfone membranes for applying in desalination by direct contact membrane distillation[J].Desalination,2016,377:99-107.